Method and apparatus for separating water from coal tar



Mar. 13, 1923. 1,448,593.

. P. JAWORSKI.

METHOD AND APPARATUS FOR SEPARATING WATER FROM COAL TAR.

FILED Aue.2e. 1921.

I l I Z 626251 1 1 A I TAR HEATED ar on r /r cA/r/rY/Ne- WA r f TAR H79W/i/Cb SOME 0/? ALL OF THE M44757 //A1S Eff/I! if/fol ffl-l-fi WATERstPA/mrsa man TAI?- Wz'i/zewas: Jaye/afar.- z M 2 1 fm! M Patented Mar.1-3, 1923.

units!) STATES PATENT OFFICE. v

PAUL JAWORSKI, F BISMARCKHUTTE, GERMANY;

METHOD AND APPARATUS FOR SEPARATING WATER FROM COAL TAR.

Application filed August 26, 1921. Serial No. 495,582.

, rating ater from Coal Tar. foravhich I have filed an application inGermany on May 6, 1920. also an application for patent in Austria onApril 30, 1921, an application for patent in France 011 May 3, 1921, anapapparatus for, separating Water from coal tar in which it is finelydistributed.

According to the present invention, the coal tar is projected upwardlyin a stream so as to impinge against a separatingsurface, so that thewater carried with the continuously projected stream of tar ismechanically separated therefrom.

The improved method is preferably carried out in an apparatus which isadapted to create a circulation of the tar in such a manner that the taris projected upwardly against a transverse separating plate or bafiie.

In order that the. invention may be more clearly understood, referenceis hereinafter made to the accompanying drawing, showingdiagrammatically in vertical section one construction of the apparatus,by way of example, for carrying out the method according to the presentinvention.

The apparatus comprises a separator or vessel a preferably cylindricaland formed with a conical bottom, the vessel being of substantiallygreater height than transverse dimensions (e. g. diameter). The heightof the vessel may be two and one half to three times its diameter. Inthe lower end of the vessel is fitted a tar heater 6 which comconicalbottom of the vessel on. The conicalof other suitably shaped bottom 6?of the vessel 6 is open at its lower end at into the vessel a. and theupper conical portion b or outlet tube 0 is open at its top to thevessel (I, so that, when the vessel (4 is filled to or just above thetop of baffle e, the contents of the tar container 2) communicate withthe contents of the vessel (1 The container 6 is fitted with a heatingcoil (Z or like means for heating the container and the upper end of thevessel a is fitted with a preferably inclined transverseseparating plate6 whichis preferably spaced at its upper edge as shown from the vesselm. Above the lower end of the transverse plate e, the vessel 0; may beprovided with a drain pipe f.

The method of operation of the apparatus is as follows.

The tar containing water which is to be dehydrated can be run in throughvalved pipe 19;, valves 4) and '0" being open, and valve '0 beingclosed. The pipe p at the bottom of the tapered part of the bottom oftank ahas a valve 2;. This pipe may be connected to a T-pipe t, to thetwo ends of which are connected a supply pipe p and an exit pipe 19 or awholly separate pipe may enter the tank a, at any suitable point foradmitting the tar to be treated.

The tar contained in the tar container 6 is heated by means of theheating coil d and thus given a considerable upward tendency so that astream of tar is projected upwardly through the tube a with a suflicientvelocity to impinge against the separating plate 6, whereupon the watercarried with the tar is separated therefrom (as liquid water) andadheres to the under surface of the plate 0, travelling upwardly alongthe same until it creeps over the upper edge thereof and flows down theupper surface of the plate 6, whilst the tar from which the water hasbeen separated gradually flows back again and is distributed over thewhole of the interior of the vessel.

Practical experience has shown that satisfactory results are obtainedwhen the tar is heated to a temperature of 50 to degrees C. In thecourse of twenty to twentyfour hours the water contained in the tar was,in a particular run of the process, re-

lOi

duoed to about three to four per cent, which face.

vpipe 11 will conduct the treated tar to a storage vessel or elsewhere.

Claims:

1. A method of separating water from coal tar. heavier than water whichconsists in projecting a stream of tar containing fine suspendedparticles of water, upwardly so as to impinge against a Separatingsurface.

2. A method according to claim 1 in which the stream impinges againstthe surface at an angle of nearly ninety degrees, so that the water willtravel along its sur- 3. A process which comprises establishing a columnof tar carrying finely divided particles of water distributed.throughout the same, keeping such column of tarry material in the formof a plurality of bodies which are in communication with each other attheir upper and lower parts, heating one of such bodies sufiiciently toreduce the specific gravity thereof, but not sufiiciently to boil thewater, and allowing the heated current of tarry material therebyproduced, to impinge against a baffle.

4. Apparatus for separating water from coal tar comprising ,a vessel ofsubstantially greaterlength than transverse dimensions, a tar heater inthe lower end of said vessel and open at its upper and lower partsthereinto, heating means associated with said heater and a transverseplate superposed above said container in the upper end of said vessel.-

5. Apparatus as specified in claim 4 in which the plate is slightlyinclined and spaced at its upper edge from said vessel.

6. Apparatus as specified in claim 4: in which the tar heater has aconical upper portion and central outlet aperture.

7. Apparatus as specified in claim 4 in which the tar heater has aconical upper portion and upwardly projectingoutlet tube.

PAUL J AWORSKI.

